The "IMAX flange" at the Lost City hydrothermal field is one of many exit points for hydrothermal fluids that are flowing through the Atlantis Massif. The fluids shown here are warm (>60 ºC = 140 ºF), very alkaline (pH 10), and rich in hydrogen, methane, and hydrogen sulfide.
Credit for all videos: Susan Lang, U. of S.C. / NSF / ROV Jason / 2018 © WHOI
Credit for all photos: Susan Lang, U. of S.C. / NSF / ROV Jason / 2018 © WHOI